package Demo3;

import java.security.Key;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 殇
 * Date: 2025-06-09
 * Time: 21:40
 */
public class Computer {
    public void powerOn(){
        System.out.println("打开电脑");
    }
    public void powerOff(){
        System.out.println("关闭电脑");
    }
    public void openDevice(USB usb){
        usb.openDevice();
        if(usb instanceof Mouse){
            Mouse mouse=(Mouse)usb;
            mouse.click();
        }
        else{
            KeyBoard keyboard =(KeyBoard)usb;
            keyboard.input();
        }
        usb.offDevice();
    }
}

